Aminoalkyl esters of 2-nitro-5-(o-chloro-p-trifluoromethylphenoxy)-benzoic acid

Abstract

Herbicidally effective aminoalkyl esters of 2-nitro-5-(o-chloro-p-trifluoromethylphenoxy)-benzoic acid, and acid addition salts and quaternary ammonium salts thereof, are suitable for the selective control of weeds in crops of useful plants, for example soya bean and rice crops. The aminoalkyl esters correspond to the formula ##STR1## wherein A is a C 2 -C 4 -alkylene bridge or the direct bond, and ##STR2## is an open amino group, and ##STR3## is a cyclic amino group.

What is claimed is: 
     
       1. An aminoalkyl ester of 2-nitro-5-(o-chloro-p-trifluoromethylphenoxy)-benzoic acid of the formula ##STR28## wherein A is a branched-chain or straight-chain C 2  -C 4  -alkylene group, R 1  is C 1  -C 4  -alkyl which is unsubstituted or substituted by halogen or hydroxyl, or is allyl or propynyl, and   R 2  is hydrogen or has the same meaning as R 1 , and acid addition salts thereof.     
     
     
       2. The compound of claim 1 which is 2-nitro-5-(o-chloro-p-trifluoromethylphenoxy)-benzoic acid-2'-dimethylaminoethyl ester. 
     
     
       3. The compound of claim 1 which is 2-nitro-5-(o-chloro-p-trifluoromethylphenoxy)-benzoic acid-dimethylamino-prop-2'-yl ester. 
     
     
       4. The acid addition salts of the compounds of claim 1 with hydrohalic acids.